Account abstraction (ERC-4337) lets smart contract accounts replace externally owned accounts on Ethereum and EVM chains, removing the need for seed phrases, gas token balances, and single-key signing. This post compares the ten most relevant account abstraction providers in 2026 so you can pick the right stack for your product.
Quick comparison
| Provider | Best for | Scope | Pricing model | Key strength | Key limitation |
|---|---|---|---|---|---|
| Openfort | Stablecoin products, embedded finance | Full stack (AA + wallets + orchestration) | Free tier + usage-based | Only provider bundling AA with stablecoin product infra, open-source | Smaller brand awareness than Alchemy or Safe |
| Alchemy | Teams already on Alchemy's platform | Full stack (AA + wallets) | Free tier + usage-based | Enterprise scale, 99.99% uptime SLA | Closed-source, vendor lock-in to Alchemy platform |
| ZeroDev | Developers wanting modular AA | AA SDK only | Free testnet + usage-based | ERC-7579 modular kernel, 130+ chains | No embedded wallets or auth — bring your own |
| Biconomy | Gasless consumer dApps | AA + gas sponsorship + orchestration | Free SDK, usage-based infra | Cross-chain execution in one signature | Smaller enterprise adoption than Alchemy or Safe |
| Pimlico | Teams building custom AA stacks | Bundler + paymaster infra | Usage-based | 200M+ transactions, 100+ chains, used by MetaMask | Infrastructure only — no wallets, no auth, no UI |
| Etherspot | Developers wanting open-source AA | AA SDK + bundler + paymaster | Freemium (free testnet, usage-based mainnet) | EF grant recipient, ERC-7579 modular accounts | Smaller ecosystem and community |
| Thirdweb | Rapid prototyping across features | AA as part of broader toolkit | Free tier + usage-based | 150+ global edge locations, broad SDK support | AA is one feature among many — not the focus |
Openfort
Openfort is open-source stablecoin product infrastructure. One SDK covers embedded wallets, smart accounts (ERC-4337), gas sponsorship, key management, and transaction orchestration. It is the only provider on this list purpose-built for teams shipping stablecoin and embedded finance products.
Key features:
- ERC-4337 smart accounts with configurable recovery and session keys
- Embedded wallets with social login, email, and passkey authentication
- Gas sponsorship with policy engine (sponsor by contract, by user segment, or by transaction type)
- Transaction orchestration: batch, sequence, and schedule onchain operations
- Open-source key management — audit the code, self-host if needed
- SDKs for JavaScript, TypeScript, React, React Native, Swift, and Node.js
- MCP Server integration for AI agents and automation tooling
- CLI for terminal-based account and policy management
Pricing: Free tier available. Usage-based pricing on mainnet transactions and active wallets.
Best for: Teams building stablecoin wallets, payment products, or embedded finance apps that need AA alongside everything else — not as a standalone SDK.
Limitations: Smaller brand footprint than Alchemy or Safe. If you only need a bundler or only need multi-sig, a specialized tool may be simpler.
Differentiator: Openfort is the only provider that bundles account abstraction with stablecoin-specific infrastructure (transaction orchestration, open-source key management, embedded wallets) in a single SDK. Every other provider on this list requires you to assemble that stack from multiple vendors.
Alchemy
Alchemy Account Kit (formerly aa-sdk) is a full-stack smart wallet solution from one of the largest infrastructure companies in the space. It bundles embedded wallets, smart accounts, and a gas manager into Alchemy's broader node and data platform.
Key features:
- Embedded wallets with email and social login
- ERC-4337 smart accounts with policy-based permissions
- Gas Manager for sponsoring and managing transaction fees
- Batch transactions to reduce user friction
- Pre-built UI components for iOS and Android
- 99.99% uptime SLA with 24/7 enterprise support
- 450K+ daily transactions across active deployments
Pricing: Free tier with generous limits. Usage-based on API calls and sponsored gas.
Best for: Teams already using Alchemy for nodes/APIs who want a single vendor, or enterprises needing SLA guarantees.
Limitations: Closed-source. You are coupling your wallet layer to Alchemy's platform — migration is expensive. Account Kit is tightly integrated with Alchemy's RPC and data products, which is a strength if you are all-in on Alchemy and a risk if you are not.
Differentiator: The deepest integration with a node provider. If you use Alchemy for everything else, Account Kit is the path of least resistance.
ZeroDev
ZeroDev is a developer-focused smart account SDK built on a modular kernel architecture. It implements ERC-7579 (modular smart accounts), which lets you plug in and swap account modules without redeploying. ZeroDev does AA and does it well — but it is AA only.
Key features:
- Kernel: modular smart account with ERC-7579 plugin system
- Key abstraction: social logins, biometrics, passkeys via plugins
- Gas abstraction: paymaster integration for fee sponsorship
- Transaction abstraction: batched multi-step operations
- Chain abstraction: cross-chain functionality via Smart Routing Address
- UltraRelay for gas optimization
- 5M+ smart accounts deployed, 40M+ transactions processed
- 130+ supported chains
Pricing: Free testnet credits (10,000). Usage-based on mainnet.
Best for: Developers who want maximum control over their smart account layer and plan to bring their own wallet and auth.
Limitations: No embedded wallets. No built-in authentication. You need to pair ZeroDev with a separate wallet provider (like Web3Auth or your own) and handle auth yourself. This is by design — ZeroDev focuses on the AA layer.
Differentiator: The modular kernel architecture. If you need to customize smart account behavior at the module level (custom validators, custom executors, custom hooks), ZeroDev gives you the most flexibility.
Biconomy
Biconomy positions itself as a universal execution layer. It combines smart accounts, gas sponsorship via a unified gas tank, and cross-chain execution infrastructure. Biconomy was one of the earliest players in gasless transactions and has evolved into a broader orchestration layer.
Key features:
- Smart accounts with the
@biconomy/abstractjsSDK - Unified gas tank: sponsor gas across 50+ EVM chains from one balance
- Cross-chain execution: single-signature transactions spanning multiple chains
- Smart Sessions: define policy boundaries for AI agents and automation
- Token-based gas payment: users pay fees in ERC-20 tokens
- DeFi Zaps: single-click deposit and withdrawal operations
Pricing: SDK is free. Infrastructure (gas sponsorship, bundler) is usage-based.
Best for: Consumer dApps that need gasless, cross-chain transactions with minimal integration effort.
Limitations: Smaller enterprise footprint than Alchemy or Safe. Documentation has historically lagged behind the product. Less modular than ZeroDev at the smart account layer.
Differentiator: The unified gas tank and cross-chain execution model. If your product operates across multiple chains and you want one gas balance to sponsor them all, Biconomy is purpose-built for that.
Pimlico
Pimlico provides bundler and paymaster infrastructure as a service. It does not offer wallets, auth, or end-to-end SDKs. Pimlico is the plumbing layer — the service that MetaMask, Safe, Trust Wallet, Zora, and Thirdweb use under the hood.
Key features:
- ERC-4337 bundlers with automatic mempool and nonce management
- Verifying paymaster and ERC-20 paymaster for gas sponsorship
- permissionless.js: open-source TypeScript library for building on ERC-4337
- 200M+ transactions processed
- 100+ chains supported
- Sub-2-second average inclusion time on L2s
- Used by MetaMask, Safe, Consensys, Trust Wallet, Zora, Thirdweb
Pricing: Usage-based on bundled UserOperations and sponsored gas.
Best for: Teams that want to build their own AA stack on top of reliable infrastructure, or existing wallet providers that need a bundler/paymaster backend.
Limitations: Infrastructure only. No wallets, no auth, no UI components. You need to build or source everything above the bundler/paymaster layer yourself. This is intentional — Pimlico is infrastructure for infrastructure teams.
Differentiator: The customer list. When MetaMask and Safe chose a bundler provider, they chose Pimlico. permissionless.js is also the most widely adopted open-source ERC-4337 TypeScript library.
Etherspot
Etherspot provides account abstraction SDKs with a focus on ERC-4337 and ERC-7579 standards. It received an Ethereum Foundation grant for pioneering work on the ERC-4337 shared mempool. Etherspot is open-source and targets developers who want modular, standards-compliant AA tools.
Key features:
- Modular SDK built on ERC-7579 for customizable smart accounts
- TransactionKit: React library for batched and gasless transactions
- Prime SDK for broader dApp usability improvements
- Arka Paymaster Service for gas sponsorship
- Skandha: ERC-4337 bundler (open-source)
- Multi-chain APIs for real-time crypto asset data
- Ethereum Foundation grant recipient for shared mempool innovation
Pricing: Freemium. Free on testnet. Usage-based on mainnet.
Best for: Developers who want open-source, standards-compliant AA infrastructure and are comfortable with a smaller ecosystem.
Limitations: Smaller community and ecosystem than ZeroDev, Alchemy, or Pimlico. Fewer integrations and pre-built components. Documentation can be sparse for advanced use cases.
Differentiator: The Ethereum Foundation grant and shared mempool work give Etherspot credibility at the protocol level. Skandha is one of the few open-source ERC-4337 bundlers available.
Thirdweb
Thirdweb offers smart accounts as one feature within a broader product-led growth toolkit for developers. Account abstraction sits alongside contracts, payments, storage, RPC, and bridge products. Thirdweb is a general-purpose developer platform, not an AA specialist.
Key features:
- ERC-4337 smart wallets with audited account factories
- Gas sponsorship for frictionless user onboarding
- Email and social sign-in for embedded wallet creation
- Composable API supporting third-party paymasters and bundlers
- Upgradeable account factory contracts
- 150+ global edge locations for low-latency infrastructure
- SDKs across multiple languages and platforms
- Real-time analytics dashboard
Pricing: Free tier. Usage-based on active wallets and transactions.
Best for: Teams building across multiple product areas (NFTs, tokens, marketplaces, payments) who want AA as part of a broader toolkit rather than a standalone integration.
Limitations: Account abstraction is not Thirdweb's focus. Updates to the AA layer may lag behind dedicated providers. The breadth of the platform means the AA implementation is less customizable than ZeroDev or Pimlico.
Differentiator: The widest product surface area. If you need smart accounts, a bridge, a fiat on-ramp, contract deployment, and IPFS storage — and you want one dashboard — Thirdweb bundles it all.
Account abstraction only vs. full stack
Providers on this list fall into three tiers:
AA infrastructure only: ZeroDev, Pimlico, Stackup (historically), Etherspot. These give you the smart account layer — bundlers, paymasters, smart account SDKs. You bring your own wallets, auth, and everything above. Choose this tier if you have an existing wallet and need to upgrade it to smart accounts, or if you are building AA infrastructure for other developers.
AA + wallets and auth: Alchemy, Biconomy, Web3Auth, Thirdweb. These bundle AA with embedded wallets and/or authentication. You get a more complete onboarding flow out of the box, but the AA layer is one feature among others. Choose this tier if your primary product is a consumer-facing app and you want to minimize the number of vendors in your stack.
Full stablecoin product infrastructure: Openfort. Beyond AA and wallets, Openfort includes transaction orchestration, open-source key management, and infrastructure specifically designed for stablecoin product teams. Choose this tier if you are building payment products, wallets, or financial applications where AA is necessary but not sufficient — you also need policy engines, transaction sequencing, and auditable key management.
The right tier depends on your product. A DeFi protocol adding gasless transactions might only need Pimlico. A consumer fintech app needs AA + wallets. A stablecoin payment product needs the full stack.
Feature comparison
| Feature | Openfort | Alchemy | ZeroDev | Safe | Biconomy | Pimlico | Stackup | Etherspot | Web3Auth | Thirdweb |
|---|---|---|---|---|---|---|---|---|---|---|
| Smart accounts | Yes | Yes | Yes | Yes (multi-sig) | Yes | No (infra only) | Yes | Yes | Add-on | Yes |
| Bundler | Yes | Yes | Yes | No | Yes | Yes | Yes | Yes (Skandha) | No | Yes |
| Paymaster / gas sponsorship | Yes | Yes (Gas Manager) | Yes | No | Yes (unified gas tank) | Yes | No | Yes (Arka) | No | Yes |
| Embedded wallets | Yes | Yes | No | No | No | No | No | No | Yes (MPC) | Yes |
| Auth (social, email, passkey) | Yes | Yes | No | No | No | No | No | No | Yes | Yes |
| Transaction orchestration | Yes | No | No | No | Yes (cross-chain) | No | No | No | No | No |
| Open-source | Yes | No | Yes (Kernel) | Yes | Partial | Yes (permissionless.js) | Partial | Yes (Skandha) | Partial | Partial |
| Self-serve signup | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes |
| Free tier | Yes | Yes | Yes (testnet) | Yes (free) | Yes | No | No | Yes (testnet) | Yes (1K MAWs) | Yes |
| Multi-chain | Yes | Yes | Yes (130+) | Yes | Yes (50+ EVM) | Yes (100+) | Limited | Yes | Yes (EVM + non-EVM) | Yes |
Account abstraction is infrastructure, not a feature. The provider you choose determines your product's UX ceiling, your migration cost if you switch, and your team's velocity for the next 12 months. Pick the level of abstraction that matches your product — not more, not less.
If you are building stablecoin products, payment apps, or embedded finance, Openfort gives you AA alongside everything else you need in one open-source SDK. Start with the docs or talk to the team.